initial support orc in spark sql
add unit tests
add orc to example of spark sql
merge with apache/master and fix conflict
fix according comments and move orc to hive sub project
fix scala style
address comments_1
update with apache/spark master and fix conflicts
log.info -> logInfo
address comments
Merge branch 'master' of https://github.com/apache/spark into orc
reuse TableReader
fix InsertIntoOrcTable
address comments
added test for read orc schema
add test files
scala style fixed
revert no related changes
Merge branch 'test' into orc
more tests